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6. Process implementation
6.1 Preparing drafts
The method of obtaining blanks is linked to the flow-forming process.
Tapered flow-forming uses cut or sheared blanks from rolled sheet metal. Pre-forming becomes necessary to obtain cones with a very narrow angle (α < 12°).
In cylindrical flow forming, the short-length starting cup is obtained :
mass machining, for small production runs (10 to 100 parts);
stamping or extrusion followed by machining, for medium and large production runs (from a few hundred to tens of thousands of parts).
The qualities required for these parts include surface finish, thickness consistency and microstructure....
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The Ultimate Scientific and Technical Reference
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Material processing - Assembly
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